1. Rated Voltage	AC 21V	AC220V	AC220V	AC120V
2. Rated Current	Max. 1.7mA(50Hz AC21V),  Max. 1.7mA, (60Hz AC21V)	Max. 170mA(50Hz) Max. 180mA(60Hz)	Max. 300mA(50Hz) Max. 300mA(60Hz)	Max. 430mA(50Hz) Max. 460mA(60Hz)
3. Resistance	3.8Ω±10%(25℃)	435Ω±10%(25℃)	245Ω±10%(25℃)	77±10%(25℃)
4. Power Consumption	Max. 20 W(50Hz)                                       Max. 15W(60Hz)	Max. 21W(50Hz)                         Max. 19W(60Hz)	REF  26W(50Hz)                          REF  20W(60Hz)	REF 25W(50Hz)                            REF 21W(60Hz)
5. Air Flow Without Load	20L/min(50Hz)                        18L/min(60Hz)	23L/min(50Hz)                         18L/min (60Hz)	26L/min(50Hz)                     20L/min(60Hz)	24L/min(50Hz)                      22L/min(60Hz)
6. Max. Pressure	30Kpa±16% (50Hz), 189~261mmHg ; 36Kpa±16% (60Hz),  226~313mmHg	25Kpa(50Hz),187mmHg 31Kpa(60Hz),233mmHg	35±15%Kpa (50Hz), 224~302mmHz; 41±15%Kpa (50Hz), 264~356mmHz	36±15%Kpa (50Hz), 230~310mmHg 40±15%Kpa (60Hz), 255~345mmHg
7.  Noise Level	<55dB(50Hz,50cm away)	<55dB(50Hz,50cm away)	<55dB(50Hz,50cm away)	<55dB(50Hz,50cm away)
8. Apply For	Air	Air	Air	Air
9.Insulation Level	E	E	E	E
PHYSICAL   DIMENSION